Li Xiao, Binbin Li, Hengchang Bu, Qiyu Gao, Xiaodong Li, Xiaohong Zhan
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引用次数: 0
摘要
本研究探讨了超声波焊接振幅和时间对碳纤维增强聚芳醚酮（CF/PAEK）复合材料接头性能的影响。为了提高 CF/PAEK 超声波焊接接头的性能，提出了一种混合能量导向器（ED），它由界面微槽和树脂薄膜或金属网组成。本研究考察了不同类型的 ED 对 CF/PAEK 单搭接接头的成型质量、剪切破坏载荷和断裂界面微观结构的影响。结果表明，带树脂薄膜的混合 ED 对提高超声波焊接接头的强度有明显的效果。带树脂薄膜的混合 ED 从根本上改善了接头的拉伸性能，强度和韧性分别提高了 35.8% 和 174.3%。这种强化效果主要归功于添加的树脂薄膜提供了足够的界面树脂。足够的树脂填充到微槽内部，最终形成机械锚固结构，增强了接头强度。
Effects of Energy Director Types on the Interface Morphology and Tensile Properties of Ultrasonically Welded CF/PAEK Joints
This study investigates the impact of ultrasonic welding amplitudes and time on the properties of carbon fiber reinforced polyaryletherketone (CF/PAEK) composite joints. To enhance the performance of CF/PAEK ultrasonic welded joints, a hybrid energy director (ED) was proposed, which was composed of the interfacial microgroove and resin film or metal mesh. This study investigated the effect of different types of ED on the forming quality, shear failure load, and fracture interface microstructure of single lap joints made of CF/PAEK. The results indicated that the hybrid ED with resin film offers a distinct effect on enhancing the strength of ultrasonic welded joints. The hybrid ED with resin film essentially improves the tensile properties of the joint, with the strength and toughness increased by 35.8% and 174.3%, respectively. This strengthening effect is primarily attributed to the added resin film providing adequate interfacial resin. Sufficient resin is filled into the interior of the microgroove, ultimately forming a mechanical anchoring structure to strengthen the joint strength.
期刊介绍：
Applied Composite Materials is an international journal dedicated to the publication of original full-length papers, review articles and short communications of the highest quality that advance the development and application of engineering composite materials. Its articles identify problems that limit the performance and reliability of the composite material and composite part; and propose solutions that lead to innovation in design and the successful exploitation and commercialization of composite materials across the widest spectrum of engineering uses. The main focus is on the quantitative descriptions of material systems and processing routes.
Coverage includes management of time-dependent changes in microscopic and macroscopic structure and its exploitation from the material''s conception through to its eventual obsolescence.
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